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2026-02-26 12:59:05 +05:30
parent e261dbf9c3
commit 33575a6863
7 changed files with 128 additions and 0 deletions
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23
TestJavaCollection4.java Normal file
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// Write a java code to demo stack
import java.util.*;
public class TestJavaCollection4{
public static void main(String args[]){
Stack<String> stack = new Stack<String>();
stack.push("Ayush");
stack.push("Garvit");
stack.push("Amit");
stack.push("Ashish");
stack.push("Garvit");
Iterator<String> itr=stack.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
String topElement = stack.peek();
System.out.println("The top element of the stack is: "+ topElement);
stack.pop()
System.out.println("After POP");
for(String element : stack){
System.out.println(element);
}
}
}

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TestJavaCollection7.java Normal file
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//Hashset
import java.util.*;
public class TestJavaCollection7{
public static void main(String args[]){
HashSet<String> set=new HashSet<String>();
set.add("Ravi");
set.add("Vijay");
set.add("Ravi");
set.add("Ajay");
set.add(null);
Iterator<String>itr=set.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}

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TestJavaCollection8.java Normal file
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//WAJ to demo linkedhash set
import java.util.*;
public class TestJavaCollection8{
public static void main(String args[]){
LinkedHashSet<String> set=new LinkedHashSet<String>();
set.add("Ravi");
set.add("Vijay");
set.add("ravi");
set.add("Ajay");
Iterator<String> itr=set.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}

17
TestJavaCollection8b.java Normal file
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/WAJ to demo linkedhash set
import java.util.*;
public class TestJavaCollection8{
public static void main(String args[]){
LinkedHashSet<String> set=new LinkedHashSet<String>();
set.add("Ravi");
set.add("Vijay");
set.add("");
set.add("Ravi");
set.add("Ajay");
Iterator<String> itr=set.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}

17
TestJavaCollection8c.java Normal file
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//WAJ to demo linkedhash set
import java.util.*;
public class TestJavaCollection8c{
public static void main(String args[]){
LinkedHashSet<String> set=new LinkedHashSet<String>();
set.add("Ravi");
set.add("Vijay");
set.add(null);
set.add("Ravi");
set.add("Ajay");
Iterator<String> itr=set.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}

18
TestJavaCollection9.java Normal file
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//WAJ to demo Treeset
import java.util.*;
public class TestJavaCollection9{
public static void main(String args[]){
TreeSet<String> set=new TreeSet<String>();
set.add("Ravi");
set.add("Vijay");
set.add("Ajay");
set.add("Ravi");
set.add("Ajay");
Iterator<String> itr=set.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}

18
TestJavaCollection9b.java Normal file
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//WAJ to demo Treeset
import java.util.*;
public class TestJavaCollection9b{
public static void main(String args[]){
TreeSet<String> set=new TreeSet<String>();
set.add("Ravi");
set.add("Vijay");
set.add("");
set.add(null);
set.add("Ravi");
set.add("Ajay");
Iterator<String> itr=set.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}